<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style type="text/css">
        body {
            margin: 0;
            padding: 0;
            background: #f6f6f6;
        }

        .divedit {
            width: 650px;
            margin: 100px auto 0;
            position: relative;
        }

        .textinput {
            min-height: 60px;
            _height: 60px;
            padding: 10px;
            font-size: 12px;
            color: #a7a7a7;
            border: 1px solid #d9d9d9;
            outline: 0;
            background: #fff;
        }

        .arrow {
            width: 20px;
            height: 20px;
            position: absolute;
            left: 52px;
            top: -9px;
        }

        .arrow .arrow-line,.arrow .arrow-bg {
            width: 0;
            height: 0;
            font-size: 0;
            line-height: 0;
            position: absolute;
            overflow: hidden;
        }

        .arrow .arrow-line {
            top: -1px;
            border-style: dashed dashed solid;
            border-width: 5px;
            border-color: transparent transparent #d9d9d9 transparent;
        }

        .arrow .arrow-bg {
            top: 0;
            border-style: dashed dashed solid;
            border-width: 5px;
            border-color: transparent transparent #fff transparent;
        }
    </style>
</head>

<body>
    <p>箭头</p>
    <div class="divedit">
        <div class="textinput">简单的爱，真心的疼，一点温暖，许多安宁，幸福~不过如此！</div>
        <span class="arrow">
                <b class="arrow-line"></b>
                <b class="arrow-bg"></b>
        </span>
    </div>
</body>

</html>
